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Product Brief

Intel® Gigabit ET and EF Multi-Port Server Adapters Network Connectivity

Intel® Gigabit ET and EF Multi-Port Server Adapters

Dual- and quad-port Gigabit Ethernet server adapters designed for multi-core processors and optimized for virtualization

· High-performing, 10/100/1000 Ethernet connection · Reliable and proven Gigabit Ethernet technology from Intel Corporation · Scalable PCI Express* interface provides dedicated I/O bandwidth for I/O-intensive networking applications · Optimized for virtualized environments · Flexibility with iSCSI Boot and choice of dualand quad-port adapters in both fiber and copper

The Intel® Gigabit ET and EF Multi-Port Server Adapters are Intel's third generation of PCIe GbE network adapters. Built with the Intel® 82576 Gigabit Ethernet Controller, these new adapters showcase the next evolution in GbE networking features for the enterprise network and data center. These features include support for multi-core processors and optimization for server virtualization. The I/O technologies on a multi-core platform make use of the multiple queues and multiple interrupt vectors available on the network controller. These queues and interrupt vectors help in load balancing the data and interrupts amongst themselves in order to lower the load on the processors and improve overall system performance. For example, depending upon the latency sensitivity of the data, the low level latency interrupts feature can bypass the time interval for specific TCP ports or for flagged packets to give certain types of data streams the least amount of latency to the application.

Designed for Multi-Core Processors

These new dual- and quad-port adapters provide highperforming, multi-port Gigabit connectivity in a multi-core platform as well as in a virtualized environment. In a multi-core platform, the adapters support different technologies such as Intel® QuickData Technology, MSI-X, and Low Latency Interrupts, that help in accelerating the data across the platform, thereby improving application response times.

Optimized for Virtualization

The Intel Gigabit ET and EF Multi-Port Server Adapters showcase the latest virtualization technology called Intel® Virtualization Technology for Connectivity (Intel® VT for Connectivity). Intel VT for Connectivity is a suite of hardware assists that improve overall system performance by lowering the I/O overhead in a virtualized environment. This optimizes CPU usage, reduces system latency, and improves I/O throughput. Intel VT for Connectivity includes: · Virtual Machine Device Queues (VMDq) · Intel® I/O Acceleration Technology1 (Intel® I/OAT) Use of multi-port adapters in a virtualized environment is very important because of the need to provide redundancy and data connectivity for the applications/workloads in the virtual machines. Due to slot limitations and the need for redundancy and data connectivity, it is recommended that a virtualized physical server needs at least six GbE ports to satisfy the I/O requirement demands.

This new generation of PCIe Intel® Gigabit adapters provides improved performance with the next-generation VMDq technology, which includes features such as loop back functionality for inter-VM communication, priority-weighted bandwidth management, and doubling the number of data queues per port from 4 to 8. It now also supports multicast and broadcast data on a virtualized server.

Intel® I/O Acceleration Technology

Intel I/O Acceleration Technology (Intel I/OAT) is a suite of features that improves data acceleration across the platform, from networking devices to the chipset and processors, which help to improve system performance and application response times. The different features include Intel QuickData Technology, Direct Cache Access (DCA), MSI-X, Low-Latency Interrupts, Receive Side Scaling (RSS), and others. Intel QuickData Technology, a DMA engine, moves data using the chipset instead of the CPU. DCA enables the adapter to pre-fetch data from the memory cache, thereby avoiding cache misses and improving application response times. MSI-X helps in load-balancing I/O interrupts across multiple processor cores, and Low Latency Interrupts can provide certain data streams a non-modulated path directly to the application. RSS directs the interrupts to a specific processor core based on the application's address.

Virtual Machine Device queues (VMDq)

VMDq reduces I/O overhead created by the hypervisor in a virtualized server by performing data sorting and coalescing in the network silicon.2 VMDq technology makes use of multiple queues in the network controller. As data packets enter the network adapter, they are sorted, and packets traveling to the same destination (or virtual machine) get grouped together in a single queue. The packets are then sent to the hypervisor, which directs them to their respective virtual machines. Relieving the hypervisor of packet filtering and sorting improves overall CPU usage and throughput levels.

End-to-end Wired Security

The Intel Gigabit ET and EF Multi-Port Server Adapters are Intel's first PCIe adapters to provide authentication and encryption for IPsec and LinkSec. LinkSec is already designed into the network adapter hardware. These adapters are future proof and prepared to provide LinkSec functionality when the ecosystem supports this new technology.


IPsec provides data protection between the end-point devices of a network communication session. The IPsec offload feature is designed to offload authentication and encryption of some types of IPsec traffic and still delivers near line-rate throughput and reduced CPU utilization. LinkSec is a new IEEE industry-standard feature that provides data protection in the network. The IEEE 802.3ae and IEEE 802.3af protocols provide hop-to-hop data protection between two network devices in the transaction line between the host and destination. The two network devices must support the LinkSec technology. The network devices could be servers, switches, and routers.

On-Board Management Features

The Intel Gigabit ET and EF Multi-Port Server Adapters enable network manageability implementations required by IT personnel for remote control and alerting (IPMI, KVM Redirection, Media Redirection) by sharing the LAN port and providing standard interfaces to a Board Management Controller (BMC). The communication to the BMC is available through an on-board System Management Bus (SMBus) port. The adapter provides filtering capabilities to determine which traffic is forwarded to the host.


General Intel® 82576 Gigabit Ethernet Controller Low-profile iSCSI remote boot support Load balancing on multiple CPUs


· Industry-leading, energy-efficient design for next-generation Gigabit performance and multi-core processors · Enables higher bandwidth and throughput from standard and low-profile PCIe slots and servers · Provides centralized storage area network (SAN) management at a lower cost than competing iSCSI solutions · Increases performance on multi-processor systems by efficiently balancing network loads across CPU cores when used with Receive-Side Scaling from Microsoft or Scalable I/O on Linux* · Allows each port to operate without interfering with the other · Enables dual- or quad-port operation in almost any PCI Express server slot, except x1 slots · Enables widespread deployment · Compliant with the European Union directive 2002/95/EC to reduce the use of hazardous materials · Provides point-and-click management of individual adapters, advanced adapter features, connection teaming, and virtual local area network (VLAN) configuration

Compatible with x4, x8, and x16 standard and low-profile PCI Express* slots Multi-port design Support for most network operating systems (NOS) RoHS-compliant3 Intel® PROSet Utility for Windows* Device Manager



I/O Features for Multi-Core Processor Servers Intel® QuickData Technology


· DMA Engine: enhances data acceleration across the platform (network, chipset, processor), thereby lowering CPU usage · Direct Cache Access (DCA): enables the adapter to pre-fetch the data from memory, thereby avoiding cache misses and improving application response time · Minimizes the overhead of interrupts · Allows load balancing of interrupt handling between multiple cores/CPUs · Based on the sensitivity of the incoming data it can bypass the automatic moderation of time intervals between the interrupts · Helps the driver to focus on the relevant part of the packet without the need to parse it · Network packet handling without waiting or buffer overflow providing efficient packet prioritization · Lower processor usage · Checksum and segmentation capability extended to new standard packet type · Increased throughput and lower processor usage · Compatible with large send offload feature (in Microsoft Windows* Server OSs) · This technology enables the direction of the interrupts to the processor cores in order to improve the CPU utilization rate · Offloads IPsec capability onto the adapter instead of the software to significantly improve I/O throughput and CPU utilization (for Windows* 2008 Server and Vista*) · A Layer 2 data protection solution that provides encryption and authentication ability between two individual devices (routers, switches, etc.) · These adapters are prepared to provide LinkSec functionality when the ecosystem supports this new technology

MSI-X support Low Latency Interrupts Header splits and replication in receive Multiple queues: 8 queues per port Tx/Rx IP, SCTP, TCP, and UDP checksum offloading (IPv4, IPv6) capabilities Tx TCP segmentation offload (IPv4, IPv6) Receive and Transmit Side Scaling for Windows* environment and Scalable I/O for Linux* environments (IPv4, IPv6, TCP/UDP) IPsec Offload LinkSec

Virtualization Features Virtual Machine Device queues2 (VMDq) · Offloads the data sorting functionality from the Hypervisor to the network silicon, thereby improving data throughput and CPU usage · Provides QoS feature on the Tx data by providing round robin servicing and preventing head-of-line blocking · Sorting based on MAC addresses and VLAN tags · Enhanced QoS feature by providing weighted round robin servicing for the Tx data · Provides loopback functionality, where data transfer between the virtual machines within the same physical server need not go out to the wire and come back in. This improves throughput and CPU usage. · Supports replication of multicast and broadcast data · Checksum and segmentation capability extended to the new standard packet type · 24 exact-matched packets (unicast or multicast) · 4096-bit hash filter for unicast and multicast frames · Lower processor usage · Promiscuous (unicast and multicast) transfer mode support · Optional filtering of invalid frames · Ability to create multiple VLAN segments

Next-generation VMDq

IPv6 offloading Advanced packet filtering

VLAN support with VLAN tag insertion, stripping and packet filtering for up to 4096 VLAN tags



Manageability Features On-board microcontroller Advanced filtering capabilities


· Implements pass through manageability via a sideband interface to a Board Management Controller (BMC) via SMBus · Supports extended L2, L3, and L4 filtering for traffic routing to BMC · Supports MAC address, VLAN, ARP, IPv4, IPv6, RMCP UDP ports, and UDP/TCP ports filtering · Supports flexible header filtering · Enables the BMC to share the MAC address with the host OS · Enables system boot up via the LAN (32-bit and 64-bit) · Flash interface for PXE image · Easy system monitoring with industry-standard consoles

Preboot eXecution Environment (PXE) Support Simple Network Management Protocol (SNMP) and Remote Network Monitoring (RMON) Statistic Counters Wake-on-LAN support iSCSI boot Watchdog timer IEEE 1588 precision time control protocol Intel Backing Intel® limited lifetime warranty

· Packet recognition and wake-up for LAN on motherboard applications without software configuration · Enables system boot up via iSCSI · Provides additional network management capability · Used to give an indication to the manageability firmware or external devices that the chip or the driver is not functioning · Time synch capability--synchronizes internal clocks according to a network master clock

· Backed by an Intel® limited lifetime warranty, 90-day money-back guarantee (U.S. and Canada), and worldwide support


General Product codes E1G42ET E1G42ETBLK E1G44ET E1G44ETBLK E1G42EF E1G42EFBLK Connectors IEEE standards/network topology Intel® Gigabit ET Dual Port Server Adapter (Bulk Pack ­ Order 5, Get 5) Intel® Gigabit ET Quad Port Server Adapter (Bulk Pack ­ Order 5, Get 5) Intel® Gigabit EF Dual Port Server Adapter (Bulk Pack ­ Order 5, Get 5) RJ45 (ET Adapters) LC Fiber Optic (EF Adapter) 10BASE-T, 100BASE-T, 1000BASE-T (ET Adapters) 1000BASE-SX (EF Adapter) Category-5, unshielded twisted pair (UTP) (ET Adapters) Shielded Cable is required for EMI compliance MMF 62.5/50 um (EF Adapter) Adapter Product Features Intel® PROSet Utility Plug and play specification support Intel® I/OAT1 including QuickData Ships with full-height bracket installed, low-profile bracket added in package Cable distance For easy configuration and management Standard · ·

100 m in Category-5 for 100/1000 Mbps; Category-3 for 10 Mbps (ET Adapters) 275 m at 62.5 um; 550 m at 50 um (EF Adapter)

Receive Side Scaling Direct Cache Access (DCA)

· The I/O device activates a pre-fetch engine in the CPU that loads the data into the CPU cache ahead of time, before use, eliminating cache misses and reducing CPU load



Specifications continued

Network Operating Systems (NOS) Software Support Operating System Windows* Vista* SP1 Windows Server* 2003 SP2 Windows* Unified Storage Solution 2003 Windows Server* 2008 Linux* Stable Kernel version 2.6 Linux* RHEL 4 Linux* RHEL 5 Linux* SLES 9 Linux* SLES 10 FreeBSD* 7.0 UEFI* 1.1 VMware ESX* 3.x Intel Backing Limited lifetime warranty 90-day, money-back guarantee (U.S. and Canada) Advanced Software Features Adapter fault tolerance (AFT) Switch fault tolerance (SFT) Adaptive load balancing (ALB) Teaming support IEEE 802.3ad (link aggregation control protocol) Test switch configuration · · · · · Tested with major switch original equipment manufacturers (OEMs) · · Time synch capability ­ synchronizes internal clocks according to a network master clock · · · · Physical Dimensions E1G42ET and E1G42EF Length Width E1G44ET Length Width Full-height end bracket Low-profile end bracket 16.74 cm (6.59 in) 6.94 cm (2.733 in) 12.00 cm (4.725 in) 7.92 cm (3.12 in) 16.74 cm (6.59 in) 6.81 cm (2.681 in) IA32 · · · · · · · · · · · · x64 · · · · · · · · · · · · · · · · Operating temperature Storage temperature Storage humidity LED indicators · IPF N/A · · · · Technical Features Data rate supported per port Bus type PCI Express Bus width Interrupt levels Hardware certifications Controller-processor Typical power consumption 10/100/1000 2.0 (2.5 GT/s) 4-lane PCI Express, operable in x4, x8 and x16 slots INTA, MSI, MSI-X FCC B, UL, CE, VCCI, BSMI, CTICK, MIC Intel® 82576 E1G42ET 2.9W E1G44ET 8.4W E1G42EF 2.2W 0° C to 55° C (32° F to 131° F) -40° C to 70° C (-40° F to 158° F) 90% non-condensing relative humidity at 35° C LINK (solid) and ACTIVITY (blinking)

PCIe Hot Plug*/Active peripheral component interconnect (PCI) IEEE 802.1Q* VLANs IEEE 1588 Precision Time Control Protocol

IEEE 802.3 2005* flow control support Tx/Rx IP, TCP, and UDP checksum offloading (IPv4, IPv6) capabilities (Transmission control protocol (TCP), user datagram protocol (UDP), Internet protocol (IP)) IEEE 802.1p* MSI-X supports Multiple Independent Queues Interrupt moderation IPv6 offloading

· · · Checksum and segmentation capability extended to new standard packet type

TCP segmentation/large send offload ·


Order Codes

Single Units: E1G42ET E1G44ET E1G42EF Intel® Gigabit ET Dual Port Server Adapter Intel® Gigabit ET Quad Port Server Adapter Intel® Gigabit EF Dual Port Server Adapter

Network-Ready Servers

Top PC and server manufacturers offer Intel adapters in their new products. Specify or ask for Intel Network Connections with your next PC, server, or mobile PC purchase. For a list of preferred suppliers, visit us at

Five-Pack Units: E1G42ETBLK Intel® Gigabit ET Dual Port Server Adapter E1G44ETBLK Intel® Gigabit ET Quad Port Server Adapter E1G42EFBLK Intel® Gigabit EF Dual Port Server Adapter

Customer Support

Intel® Customer Support Services offers a broad selection of programs including phone support and warranty service.

Companion Products

Consider these Intel products in your server and network planning: · Intel® 10 Gigabit Server Adapters ­ Copper or fiber-optic network connectivity, up to two ports per card · Intel® PRO/1000 Server Adapters ­ Copper or fiber-optic network connectivity, up to four ports per card ­ Solutions for PCI Express, PCI-X,* and PCI interfaces · Intel® PRO/1000 Desktop Adapters for PCI Express and PCI interfaces · Other Intel® PRO Desktop and Server Adapters · Intel® Xeon® processors · Intel® Server Boards

For more information, contact us at support/go/network/adapter/home.htm. Service and availability may vary by country.

For Product Information

To speak to a customer service representative regarding Intel products, please call 1-800-538-3373 (U.S. and Canada) or visit for the telephone number in your area. For additional product information on Intel Networking Connectivity products, visit


To see the full line of Intel Network Adapters for PCI Express, visit

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Intel®I/OAccelerationTechnology(Intel®I/OAT)requiresanoperatingsystemthatsupportsIntel®QuickData. VMDqrequiresavirtualizationoperatingsystemthatsupportsVMDq.



Intel Gigabit ET and EF Multi-port Server Adapter

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